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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_BOOKMARK_STORAGE_H_ | |
| 6 #define CHROME_BROWSER_BOOKMARK_STORAGE_H_ | |
| 7 | |
| 8 #include "base/ref_counted.h" | |
| 9 #include "base/task.h" | |
| 10 #include "chrome/browser/browser_process.h" | |
| 11 | |
| 12 class BookmarkBarModel; | |
| 13 class Profile; | |
| 14 class Value; | |
| 15 | |
| 16 // BookmarkStorage handles reading/write the bookmark bar model. The | |
| 17 // BookmarkBarModel uses the BookmarkStorage to load bookmarks from | |
| 18 // disk, as well as notifying the BookmarkStorage every time the model | |
| 19 // changes. | |
| 20 // | |
| 21 // Internally BookmarkStorage uses BookmarkCodec to do the actual read/write. | |
| 22 | |
| 23 class BookmarkStorage : public base::RefCountedThreadSafe<BookmarkStorage> { | |
| 24 friend class BookmarkStorageBackend; | |
| 25 | |
| 26 public: | |
| 27 // Creates a BookmarkStorage for the specified model | |
| 28 BookmarkStorage(Profile* profile, BookmarkBarModel* model); | |
| 29 | |
| 30 // Loads the bookmarks into the model, notifying the model when done. If | |
| 31 // load_from_history is true, the bookmarks are loaded from the file written | |
| 32 // by history (StarredURLDatabase). | |
| 33 void LoadBookmarks(bool load_from_history); | |
| 34 | |
| 35 // Schedules saving the bookmark bar model to disk. | |
| 36 void ScheduleSave(); | |
| 37 | |
| 38 // Notification the bookmark bar model is going to be deleted. If there is | |
| 39 // a pending save, it is saved immediately. | |
| 40 void BookmarkModelDeleted(); | |
| 41 | |
| 42 private: | |
| 43 // Callback from backend with the results of the bookmark file. | |
| 44 void LoadedBookmarks(Value* root_value, | |
| 45 bool bookmark_file_exists, | |
| 46 bool loaded_from_history); | |
| 47 | |
| 48 // Schedules a save on the backend thread. | |
| 49 void SaveNow(); | |
| 50 | |
| 51 // Returns the thread the backend is run on. | |
| 52 base::Thread* backend_thread() const { return backend_thread_; } | |
| 53 | |
| 54 // The model. The model is NULL once BookmarkModelDeleted has been invoked. | |
| 55 BookmarkBarModel* model_; | |
| 56 | |
| 57 // Used to delay saves. | |
| 58 ScopedRunnableMethodFactory<BookmarkStorage> save_factory_; | |
| 59 | |
| 60 // The backend handles actual reading/writing to disk. | |
| 61 scoped_refptr<BookmarkStorageBackend> backend_; | |
| 62 | |
| 63 // Thread read/writing is run on. This comes from the profile, and is null | |
| 64 // during testing. | |
| 65 base::Thread* backend_thread_; | |
| 66 | |
| 67 DISALLOW_COPY_AND_ASSIGN(BookmarkStorage); | |
| 68 }; | |
| 69 | |
| 70 // Used to save the bookmarks on the file thread. | |
| 71 class BookmarkStorageBackend : | |
| 72 public base::RefCountedThreadSafe<BookmarkStorageBackend> { | |
| 73 public: | |
| 74 explicit BookmarkStorageBackend(const std::wstring& path, | |
| 75 const std::wstring& tmp_histor_path); | |
| 76 | |
| 77 // Writes the specified value to disk. This takes ownership of |value| and | |
| 78 // deletes it when done. | |
| 79 void Write(Value* value); | |
| 80 | |
| 81 // Reads the bookmarks from kBookmarksFileName. Notifies |service| with | |
| 82 // the results on the specified MessageLoop. | |
| 83 void Read(scoped_refptr<BookmarkStorage> service, | |
| 84 MessageLoop* message_loop, | |
| 85 bool load_from_history); | |
| 86 | |
| 87 private: | |
| 88 // Path we read/write to. | |
| 89 const std::wstring path_; | |
| 90 | |
| 91 // Path bookmarks are read from if asked to load from history file. | |
| 92 const std::wstring tmp_history_path_; | |
| 93 | |
| 94 DISALLOW_EVIL_CONSTRUCTORS(BookmarkStorageBackend); | |
| 95 }; | |
| 96 | |
| 97 #endif // CHROME_BROWSER_BOOKMARK_STORAGE_H_ | |
| 98 | |
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